Plastic form for vaults.



I. SCHMUCK.

PLASTIC FORM FOR VAULTS.

APPLICATION FILED AUG-22, I918.

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J. SCHMUCK. PLASTIC FORM FOR VAULTS.

APPLICAUON' FILED M1612. I9 I 8.

1,292,093. Patented Jan. 21,1919.

2 SHEETS-SHEET 2- wuentmk 'ZZ We gsczmuaf' 54- W w z JOE SGHMUCK, OF IE'ITTSBU'RG, KANSAS.

PLASTIC FORM FOR VAULTS.

Application filed August 22, 1918.

To all whom it may concern Be it known that I, Jon SCHMUOK, a citizen of the United States, residing at Pittsburg, in the county of Crawford and State of Kansas, have invented certain new and useful Improvements in Plastic Forms for Vaults, of which the following is a specification.

This invention relates to plastic apparatus, and more especially to molds; and the object of the same is to produce a sheet metal core capable of being collapsed from the interior after the plastic sets around its exterior. The invention contemplates the production of a vault such as those in which the dead are buried, which will be described hereinafter, but it is quite possible to use this collapsible mold for forming culverts and the like, although in that case there would be no door.

The primary object of the invention is to construct a core in several members hingedly connected with each other in such manner that they may collapse inwardly, although each member may be of itself rigid.

A secondary object is the provision of the means for holding said members in distended position while the plastic sets, the distending means or struts being collapsible from within.

Details are set forth in the following specification and claims, and attention is invited to the drawings in which:

Figure 1, is a side elevation.

Fig. 2, is a central longitudinal section of this complete core mold set up ready for use.

Fig. 3, is a horizontal section taken on the line 33 of Fig. 2.

Fig. 4, is a front elevation of the body portion of the mold.

Fig. 5, is a front elevation of the entire mold.

Fig. 6, is a plan view of the mold for forming the door of the vault, the same be ing on a reduced scale.

The body portion of this mold is made up of two side walls and a top. Each side wall 1 is constructed of sheet iron as long and as wide as it is desired to have the inside dimensions of the vault being built, and each plate 1 .is by preference braced along its lower edge by angle iron as shown at 2 and also at suitable intervals by upright angle iron strips 3. The top or cover 4 is arched as illustrated in-Fig. 4 and may Specification of Letters Patent.

Patented Jan. 21, 1919.

Serial No. 251,017.

be braced at intervals as shown at 5, and its edges are connected by hinges 6 to the upper edges of the walls 1. This member is of a length equal to that of the walls, and of a width desired, and by preference it tapers slightly toward the rear as best seen in Figs. 1 and 2.

The rear or inner end of the structure is closed if employed for building a Vault or other receptacle whose rear end is to be closed, although if this mold core is employed for building a culvert, the rear may be omitted. The same is shown herein as made of two plates 7 and 8 lapping each other at their inner edges as shown in Fig. 4 and connected at their outer edges in any suitable manner with the side walls 1, and the upper edges of these lates are cut away as indicated at 9 in Fig. 4 for a purpose yet to appear.

For holding the parts distended I make use of toggle-like pieces or struts connecting the side walls as best seen in Figs. 3 and 4. Each strut is made up of a short link 10 connected at its outer end at 11 to one of the upright braces 3, and a long link 12 similarly pivoted at 13 at its outer end to the opposite brace 3, a pivot 14 connecting the two links at about the center of the structure, and an overhanging lip 15 on the inner end of the long link which rests upon the short link 10 when the two links are in alinement as shown in Fig. 5. This prevents the sagging of the intermediate pivot 14 below a horizontal line between the end pivots 11 and 13, while yet permitting the strut to be collapsed by having its intermediate portion moved upward suddenly, as by a blow of a hammer. Carried by the long link of the endmost struct is a longitudinal brace comprising two members 16 and 17 hingedly connected as at 18 so that the rearmost member 17 may be raised as shown in dotted lines in Fig. 2. Its rear end preferably has a foot 19 which contacts with the plate 8 when this brace is straightened out, and it is obvious that by lifting the member 17 the foot is brought. out of contact with the rear end wall and the latter may be collapsed.

When this core is used for the formation of a vault which should have a rear end and a formal entrance at its front end, use will be made of the structure shown in Figs. 1, 2 and 3, and in elevation in Fig. 5. This is made up of two side walls 21 rigidly connected at their upper edges by an arched top or cover at which preferably parallels the curvature of the body. But the side walls are carried only part way down as shown in Fig. 5, or in other words each side wall is made up for an upper plate 21 and a lower plate 23 whose upper end laps the inside of the upper plate and whose lower end has an angle iron 22. These elements 21, 23 and 24 have right angular flanges 25 at their inner edges reducing them to about the size of the body portion, and from the inner edges of said flanges project lips 27 which slip inside the front end of the body member as shown in Figs. 2 and 3. These flanges are connected by hinges 26 between the upper and lower sections of the walls 21 and 23, so that the lower section 23 with its flanged portion 25 may swing in the direction indicated by the arrow in Fig. 2, carrying with it the angle iron 22 and the lower portion of the lip 27 whose lower extremity is preferably cut ofi oblique as indicated at 29 in Fig. 2. On account of the right angular disposition between the flanges and the several elements of this portion of the structure, I find it not usually necessary to employ a strut or brace to hold the parts distended.

In Fig. 6 is shown an outside mold which may be employed for forming the door or closure to the mouth of the vault. Upright side walls 31 are hinged at 36 to an arched top wall 34, and a fiat bottom plate 33 is connected by bolts 35 with lips 32 at the lower edges of the walls 31. I have disclosed this structure as being upright, but

in use it may be laid on a board or other fiat surface and the plastic poured into it and allowed to set, after which the bolts 35 may be removed and the walls swung outward on their hinges so as to take the mold off of the hardened finished product. The latter will then be used as a door or closure the device previously described.

The use of my improved core mold is as follows V The parts are set up as shown in the drawings, and an outside structure will doubtless be fixed around the core and across the rear end of the core to hold the plastic cement as it is poured. After the plastic has set, an operator may pass into the core if the latter be large enough, or may reach into it with a suitable tool, and'may trip the rear brace by moving its member 17 as shown in dotted lines in Fig. 2 and then trip the struts by V knocking their centers upward in a manner which will be clearly understood. The lower portion of the walls 23 of the front of this mold are swung forward as far as the hinges 26 permit and the entire front piece" drawn out of the front end of the body piece.

. Said body piece now having had its braces or struts tripped collapses a little as its side walls swing inward around their hinges 6, and immediately the top e'may drop a little as the altered position of the side walls permits. The entire structure can now be drawn out of the vault, and especially if the top tapers toward the rear as shown in Fig. 2, and with it will come the rear end members 7 and 8 if they are permanently attached to the walls 1. lVIy invention is not concerned with the outside treatment of the plastic structure made by the use of this mold, and therefore the same is not shown and described. It will be obvious that a culvert or the like can be set with this core mold, in which case it might be desirable to permit the rear end and the front end to be open. I propose and intend to use the structure for building vaults, and in that case a front door will be needed. The same can be made with the mold illustrated in Fig. 5, and after the door is finished it may be fitted and applied to the mouth of the vault in a manner not necessary to describe.

The foregoing description and the drawings have reference to what may be considered the preferred, or approved form of my invention. It is to be understood that I may make such changes in. construction and arrangement and combination of parts, materials, dimensions, etc., as may prove eX- pedient and fall within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. A collapsible core for molding vaults and the like, comprising a pair of upright side walls, an arched top wall hingedly connected at its edges with the upper ends of said side walls, collapsible struts for hold- 105 ing the latter distended, a rear wall made in two members, each of which is connected at its outer edge with one of the side walls and the members lapping each'other at their inner edges, and a brace composed of a front 110 member carried by one of said struts and a .rear member hinged to the front member ing means for holding said plates when the 7,

walls are distended. 1

- 3. In a core for moldingvaults, the combination with a body 'member comprising side walls and a topand means for holding these parts. distended, and a two-part rear wall with means for holding it in place, of a structure for the front end comprising two-part side walls overlapping each other, an arched top rigidly connecting the upper edges of the upper parts, flanges at right angles to all of said parts, lips formed at the inner edges of the flanges and adapted to pass inside the front end of the body, and hinge connections between the upper and lower parts, for the purpose set forth.

4. In a core for molding vaults, the combination with a body member comprising side walls and a top and means for holding these parts distended, and a two-part rear wall with means for holding it in place, of a structure for the front end comprising twopart side walls overlapping each other, an arched top rigidly connecting the upper edges of the upper parts flanged at rightangles to all of said parts, lips formed at the edges and adapted to pass inside the front end of the body, and hinges connecting the flanges of the upper and lower parts at each side so as to permit the lower parts to swing forward, the lower ends of the lips being cut away, as described.

5. A core for vault molds comprising a collapsible body, a collapsible rear end, and a collapsible enlarged front end member having lips slidably fitting within the front end of the body, the whole as described.

In testimony whereof I aflix my signature in presence of two witnesses.

JOE SGHMUOK.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents.

' Washington, D. 0. 

